Tyler Kui) Lab #1: Separation of a Mixture Mr. Mejia 10/3/14 Separation of a Mixture Lab Report Abstract The purpose of the experiment was to separate an initial heterogeneous mixture composed of 5.00 grams of salt‚ 2.00 grams of sand‚ 50.0 mL of water‚ 15.00 grams of pebbles‚ and 1.00 gram of iron filings‚ and leave as much salt as possible remaining. Using separation techniques including magnetizing‚ evaporation‚ filtration‚ etc. the heterogeneous mixture was thoroughly separated into 4.88
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Determining lung capacity Experiment: This is the experiment of determining lung capacity. All the students in the group measured three types of different parameters: vital capacity‚ expiratory reserve and tidal volume. “Lung volumeizing refer to physical differences in lung volume‚ while lung capacities represent different combinations of lung volumes‚ usually in relation to inhalation and exhalation.The average pair of human lungs can hold about 6 liters of air‚ but only a small amount of
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Introduction: Specific gravity or relative density is the ratio of the density of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water. Temperature and pressure must be specified for both the sample and the reference. The following formula is used- Specific gravity= density of sample/density of same volume of water. Specific gravity is commonly used as a simple means of obtaining information about the concentration of solutions
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You can use a flashlight to help see if a mixture is a solution‚ a suspension‚ or colloid. A solution is a mixture that forms when substances dissolve and form a homogenous mixture. A suspension is a heterogeneous mixture that separates into layers over time. A colloid is a mixture that contains some particles that are intermediate in size between the small particles in a solution‚ and the larger particles in a suspension. A homogenous mixture is a mixture in which the substances are so evenly distributed
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The Separation of Mixtures This lab demonstrates the difficult task of separating mixtures using different types of methods. This study is performed because it helps you understand the concept of separation and certain characteristics of elements. Previous knowledge in which already exists in this lab would be the process of filtration‚ distillation‚ magnetism‚ and evaporation. The specific hypotheses of this experiment was that the iron would separate through magnetism‚ the salt would separate
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A specific phobia is an irrational fear of a usually harmless object‚ place or situation. This fear leads people to dread confronting everyday situations‚ or avoid them altogether. ‘The most common specific phobias are agoraphobia‚ the fear of crowded places and arachnophobia‚ the fear of spiders’ (Davenport‚ 1992‚ pg. 239). The main symptoms of person suffering from specific phobia according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV)‚ include ‘a marked and persistent
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Accred Qual Assur (2005) 10:172–176 DOI 10.1007/s00769-005-0914-6 PRACTITIONER’S REPORT V. Kmecl J. SuÐin ˇˇ L. Zupancic-Kralj Validation of analytical methods used for determination of nitrate in soil Received: 7 April 2004 Accepted: 3 November 2004 Published online: 24 March 2005 Springer-Verlag 2005 V. Kmecl ()) · J. SuÐin Agricultural Institute of Slovenia‚ Hacquetova 17‚ 1000 Ljubljana‚ Slovenia e-mail: veronika.kmecl@kis.si Tel.: +386-1-2805164 Fax: +386-1-2805255 ˇˇ L. Zupancic-Kralj
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Social Carrying Capacity The use of parks and protected areas by visitors creates concern about appropriate levels of use because there are limits that define how much pressure from outside forces an ecosystem can endure before it experiences degradation‚ and there are thresholds that define visitor experiences. When researchers‚ park authorities‚ and policy makers are trying to determine appropriate usage levels of specific areas‚ they frequently rely on the rationale of carrying capacity‚ including
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Theory: Distillation is the conversion of a mixture of substance into vapors which is afterwards condensed to the liquid form. It cans separation or purification of substances by taking advantage of differences in volatility. The purpose of this lab is comparing the efficiency of two distillation methods with the mixture of ethanol and 1-butanol. in theory the fractional distillation should be more efficient because of the steel sponge. The sponge acted as surface area for gas to condense on. This
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radiation is one of the three ways in which heat is transferred. In convection‚ heat can be exchanged from one fluid to another. In this experiment‚ a heated plate is in contact with air inside a rectangular cross section duct. The air is heated by conduction from the heated plate. The density of the air decreases as it is heated and this makes the warm air rise. Colder air‚ which in turn is less dense‚ then replaces the warmer air‚ which has risen. The plate then heats this colder air‚ which will eventually
Free Heat transfer Heat Fluid dynamics